Flat roof & waterproofing
Flat Roof Waterproofing in Luxembourg
Reliably watertight flat roofs in master craftsman quality – from planning to finished waterproofing, all from one source.
- Master craftsman business
- 20+ years of experience
- Everything from one source
- Master craftsman business
- 20+ years of experience
- Free quote
- Everything from one source
Flat roof
The service in detail
A flat roof is only as good as its waterproofing. We make sure your roof stays watertight for the long term – with high-quality membranes, carefully finished detailing and well-planned drainage.
Whether it is a garage, an extension, a carport or a modern home with clean architectural lines, flat roofs are increasingly popular and create valuable usable space. To stop that level surface from becoming a headache, it needs professional waterproofing that stands up to wind, weather and standing water for decades.
As a master-roofer business with more than 20 years of experience, we waterproof flat roofs throughout Luxembourg – from Mertert, Wasserbillig and Grevenmacher to Echternach, Remich and Wormeldange, and on to Junglinster and Luxembourg City. We work exclusively with proven brand systems from alwitra and BAUDER and deliver every project entirely from a single source.
From the first measurement through the choice of materials to the finished, inspected waterproofing, you have one dedicated contact: Michael Blang. That way you always know who stands behind the quality of your roof. For roof trusses and timber construction, we work closely with our sister company Blang Holzbau.
On request, we inspect your flat roof regularly and maintain the waterproofing – so the protection lasts throughout its service life. We are of course happy to advise you on insulation, fall build-up and the right detailing solutions for your building.
Variants & materials
Flat roof waterproofing with membranes
The heart of every watertight flat roof is the membrane. We install single-ply synthetic and bituminous membranes from alwitra and BAUDER – welded to the highest standard and carefully finished at every detail. The result is a continuous, durable waterproofing layer that protects reliably even where water stands.
- Single-ply alwitra membranes, professionally welded
- Careful detailing at upstands and terminations
- Well-planned drainage with outlets and emergency overflows
- Sturdy edge and trim profiles for clean lines
- Ideal for extensions, garages, carports and modern architecture
Materials & partners
Why Blang & Lauterbach
Your advantages
Watertight for the long term
High-quality brand membranes and clean workmanship deliver waterproofing that lasts for decades.
Everything from one source
From planning and materials to the finished waterproofing, we manage your project end to end – with a single point of contact.
Brand quality
We rely on proven systems from alwitra and BAUDER that have repeatedly stood the test in Luxembourg's demanding climate.
Reliable drainage
We plan falls, outlets and emergency overflows so that rainwater drains away dependably and never pools.
Regional roots
As a master craftsman business based in Mertert, we are quickly on site – across the region and throughout Luxembourg.
Personal service
From the first conversation to handover, Michael Blang remains your dedicated contact, accountable for every detail.
How your project unfolds
Transparent, plannable and step by step – from the first consultation to handover.
- 01
Consultation
We listen, inspect your roof and advise you honestly on the best solution.
- 02
Measuring
Precise on-site measuring as the basis for planning, materials and costs.
- 03
Quote
You receive a clear, free quote – transparent and with no hidden items.
- 04
Execution
Clean, on-schedule delivery by our qualified roofing team.
- 05
Handover
Joint final inspection and handover – so everything lives up to our promise.
A look at our work
Frequently asked questions
The cost depends on the area, the roof build-up, the insulation and how much detailing is involved – a small garage roof is not the same as a large extension. After an on-site measurement, you receive a clear, free quote with no hidden items.
Waterproofing installed professionally with alwitra or BAUDER brand membranes typically reaches a service life of several decades. This depends on high-quality materials, careful detailing and regular checks of the drainage outlets.
Yes. We deal with leaks, damaged junctions and blocked outlets just as readily as we re-waterproof complete roofs. Often a targeted repair is enough to prevent more serious follow-on damage.
Yes, we are there for you across the whole country. From our base in Mertert we look after customers in Wasserbillig, Grevenmacher, Echternach, Remich, Wormeldange, Junglinster and Luxembourg City, as well as the rest of the Grand Duchy.
For energy-related renovations of existing buildings, the reduced VAT rate of 3% may apply under certain conditions. We are happy to advise you on whether your project qualifies and to support you with the paperwork.
We carry out the waterproofing and roofing ourselves. For roof trusses, timber construction and carpentry, we work with our sister company Blang Holzbau – so you get master craftsman quality throughout.
Ready to make your flat roof watertight?
Request your free quote now – we'll advise you personally and get back to you shortly.
We speak German, Luxembourgish and English.